Door for coke ovens or furnaces.



J. WHITAKER.

DOOR FOR COKE OVENS 0R FURNAGES. APPLICATION FILED mm 15,1908.

Patented Feb. 9, 1909.

HQQQQQQQQQQU I I I I I l l l l I I I I l l I I 1 I r the design of the frame'being such as to ed claims.

JOHN WHITAKEROF NEWHAVEN, PENNSYLVANIA.

DOOR FOR com OVENS 0R FURNACES.

Specification of Letters Patent.

Patented Feb. 9, 1909.

Application filed. June 15, 1908. Serial No. 438,521.

of which the following is a specification, reference being had therein to the accompanying drawing.

This invention relates to doors for coke ovens and furnaces, and the primary .ob-

ject of m invention is to provide a strong and dura le door that will stand. consider able heat before warping or becomingdistorted.

Another object of my invention is t0 pro- 'vide a door of the above type having .a novel metallic skeleton frame that can be backed or filled with a non-,fusible material as fire-brick, fire-clay, and concrete suitably reinforced My intention aims to provide a metallic skeletondoor frame that will equalize the temperature to which the same is subjected,

prevent warping and fractures of the material forming the body of the door, also compensating for the expansion due to the high heat to which doors-of this type are subjected.

The detail construction entering into my invention will be resently described and then specifically pointed out in the appendln the drawings, Figure 1 is a vertical sectional view of the frame of my door, Fig. 2 is a front elevationgofthc same, Fig. 3 is an end view of the door,-and Fig. t-is a front elevation of a modified form'or differentshaped door.

My door frame is construtedof metallic angle bars, angle plates and straps, all socured together by rivets to form a ri id structure. The'angle bars 1 are assemble to provide a rectangular-structure with the beveled ends 2 of saidangle bars connected upon their inner edges by angle plates 3, said angle plates bracin the corners of-the door.

The flanges of t e angle bars 1 are aper. tured, as at 4 to provide a forammous struc- 1n the presence of two witnesses.

ture for preventing the angle bars from warping and for compensating for the expansion of said angle bars due to the intense heat to which said bars are subjected. Secured to the upper right hand corner of the door is a hinge strap 5, and secured to the lower right hand corner of the door is a hinge strap 6,said strap being of a greater length than the strap 5 and extending diagonally across the door to the upper left hand corner, where the endof said strap is secured by rivets 7 or similar fastening. means. The diagonally disposed portion of the strap 6 is apertured, as at S for the same purpose as the apertures 4 of the angle bars 1. In the fabricated frame is placed fire brick, fire clay, cement, or a similar nonfusible material, (not'shown), and this material is prevented from fracturing by the perforated angle bars 1.

In Fig. 4 of thedrawings I have illustrated a door frame designed for closing an arched door way, the frame having a curved angle bar 9-to which is secured an elongated hinge strap .5 said strap being also secured to the vertical angle bar at the upper edge of the frame.

It is impossible for a door constructedin" accordance with my invention to buckle "or become distorted by an intense heat, there'- fore -.its adaptability to ovens, furnaces and fire boxes.

lVhile in the drawings forming a partffof this application there is illustrated thelp'referred embodiments of my invention, I would have it understood that the elements therein can be varied orchanged without departing from the spirit of the invention;

Having now described my, invention what I claim as new, is

1. A frame for doors comprising angle bars having beveled ends, angle plates for securing the beveled ends of'said bars together, hinge straps secured to said-.frame, one of said straps being of a greater length than the other of said straps and extending diagonally across said frame, said strap and said angle bars haying apertures formed therein, substantially as, and for the purpose described.

2. A frame for doors comprising a foraminous metallic structure with the followingcombination of elements,angle bars, angle plates-connecting said bars, and hinge straps secured to said bars.

In testimony whereof I afiix my signature JOHN \VHITAKEB.

Witnesses:

ALBERT HooPn-n, E. W.-l3nN'rnL. 

